Process of delustering artificial silk fibers or rayon



Patented July 1, 1930 UNITED STATES PATENT OFFICE OSCAR F. MULLER, OF MONTCLAIR, NEW

JERSEY, ASSIGNOR 'IO NYANZA COLOR 82;

OHEMICAL (10., ING., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK PROCESS, OF DELUSTERING ARTIFICIAL SILK FIBERS OR RAYON No Drawing. Application filed May 11,

to, I employ an emulsion of olive oil soap in combination with glue and paraffin for a preliminary treatment of the rayon fiber, and then subsequently I subject the fiber so treated with an emulsion to the action of a mild abrasive such as infusorial earth. This process comprises two steps or operations, but I I have discovered by further experimentation that by the careful manipulation of my materials rayon or similar fibers maybe satisfactorily delustered in a single operation.

My improved process is as follows: First, I prepare an emulsion of paraffin and .water with glue and soap as the emulsifying agents; 10 parts by weight of commercial green olive oil soap and 10 parts by weight of medium white glue are dissolved in 100 parts of'water. The mixture of soap and glue solution is heated, and then 4 parts of paraifin are added until the paraflin is completely emulsified,

I add 2 parts of the foregoing emulsion to 100 parts of water, and then add to the mixture 5 to 10 pounds of infusorial earth. The mixture is then heated to about 95 F. and is kept at a temperature of from 95 to 100 F. during the delustering operation.

The artificial silk or rayon in skein form is put into the mixture and is subjected to the action of this mixture for a period of ap proximately fifteen minutes. It will be obvious that the duration of the treatment may be varied according to the degree of delustering desired.

Instead of infusorial earth other abrasives may be used, such as chalk, kaolin, fullers earth, or zinc oxide, and it is also obvious that instead of the specific emulsion mentioned, other liquids may be used to render the surface of the textile fiber receptive to the action of the abrasive.

I have found that the abrasive itself is 1929. Serial No. 362,464.

without permanent effect upon the fiber, unless used in association with a suitable adhesive, as the surface of the fiber is practically.

unaffected if treated with an abrasive alone.

By the foregoing treatment the process of delustering rayon or similar fibers is much simplified as the entire operation is conducted in a single bath.

Having fully described my invention, what I claim is:

1. A process of delustering artificial silk fibers by subjecting same to the action of an emulsion of paraffin in water having an abrasive suspended therein.

2. A process of delustering artificial silk fibers by subjecting same to the action of an emulsion of parafiin in water having infusorial earth suspended therein.

3. A process of delustering artificial silk fibers by subjecting same to the action of an emulsion of a colloidal material .-having an abrasive suspended therein.

4. A process of delustering artificial silk fibers by subjecting same to the action of an emulsion of a waxy material having an abrasive suspended therein.

5. A process of delustering artificial silk fibers by subjecting same simultaneously to the action of a bath containing a wax emulsion and abrasive substance.

6. A process-of delustering artificial silk fibers by subjecting same simultaneously to the action of a bath containing a wax emulsion and infusorial earth.

7. A process of delustering artificial silk fibers by subjecting same simultaneously to the action of a bath containing an emulsion of paraflin and infusorial earth.

8. A process of 'delustering artificial silk fibers by treating same with an emulsion having an abrasive suspended therein.

9. A process of delustering artificial silk i fibers by treating same with an emulsion having infusorial earth suspended therein.

10. A process of delust ring artificial silk fibers by treating same witr an emulsion containing glue and paraffin and having an abrasive suspended therein.

11. A process of delustering artificial silk fibers by treating same with an emulsion containing glue and parafiin and having infusorial earth suspended therein.

12. A process of delustering artificial silk fibers by subjecting same to the action of an emulsion containing glue and paratfin, said emulsion having an abrasive suspended therein at a temperature of from 100 F.

13. A process of delustering artificial silk fibers by subjecting same to the action of an emulsion containing glue and paraffin and an abrasive for a period of fifteen minutes at a temperature of approximately 95l00 F. i

In testimony whereof I aflix my signature.

' OSCAR F. MULLER. 

